Ответ:
(a^b)=45°
Объяснение:
(ab)=3·3+3·0+0·0=9
|a|=√(3²+3²+0²)=3√2
|b|=√(3²+0²+0²)=3
|a|·|b|=3√2·3=9√2
cos(a^b)=(ab)/(|a|·|b|)=9/(9√2)=√2/2⇒(a^b)=π/4
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Ответ:
(a^b)=45°
Объяснение:
(ab)=3·3+3·0+0·0=9
|a|=√(3²+3²+0²)=3√2
|b|=√(3²+0²+0²)=3
|a|·|b|=3√2·3=9√2
cos(a^b)=(ab)/(|a|·|b|)=9/(9√2)=√2/2⇒(a^b)=π/4